2010
#153,769
National surname rank
Recorded bearers 106
First available Census row
Per 100,000 0.04
Very Rare Last name
Hardoin
Of French origin, referring to a bold or audacious person.
According to the 2020 US Census Bureau surname tables, roughly 117 Americans carry the last name Hardoin. That puts it at #154,755 in the national surname ranking, appearing at a frequency of 0.03 per 100,000 people (about 1 in 2,929,524 residents).
This page is the full Name Census profile for the Hardoin surname. You will find the Census Bureau frequency data, a multi-census history view, an ancestry and ethnicity breakdown based on self-reported demographics, the name's meaning and origin where available, and answers to the most common questions people ask about this surname.
Bearers in the US
117
1 in 2,929,524
Census rank
#154,755
2020 decennial data
Per 100,000
0.0
Frequency rate
Recorded bearers
102
very rare in the US
Popularity narrative
The Census Bureau recorded 102 bearers of the surname Hardoin in its 2020 decennial surname file. At a rate of 0.03 per 100,000 residents, it holds the 154755th position in the national surname ranking.
Among Census respondents with the surname Hardoin, the largest self-reported group is White at 97.1%. The next largest groups are Two or More Races (2.9%).
Origin
Meaning and origin of Hardoin
The surname HARDOIN is of French origin, originating from the region of Burgundy in eastern France. It is believed to have emerged around the 12th century, derived from the Old French word "hardir," meaning "to encourage" or "to embolden." The name likely referred to someone with a bold or courageous demeanor.
One of the earliest recorded instances of the HARDOIN surname appears in the Cartulaire de l'Abbaye de Molesme, a medieval manuscript dating back to the 12th century. This document mentions a certain "Petrus Hardoin," who was a landowner in the village of Molesme, located in the Côte-d'Or department of Burgundy.
In the 13th century, the name HARDOIN can be found in the Livre des Vassaux du Comté de Bourgogne, a medieval record of vassals and landholders in the County of Burgundy. This document lists several individuals bearing the HARDOIN surname, suggesting that the name had already established itself in the region by that time.
During the 14th century, the HARDOIN name appears to have spread beyond Burgundy to other parts of France. One notable figure from this period was Jean Hardoin (c. 1320 - 1390), a prominent lawyer and judge who served as the Lieutenant General of the Bailiwick of Troyes in the Champagne region.
In the 15th century, the HARDOIN surname is associated with the village of Hardoin-Lézey, located in the Aube department of northeastern France. This place name likely derived from the surname itself, indicating that a family bearing the HARDOIN name may have been influential in the area.
Another significant figure in the history of the HARDOIN name was Jean Hardouin (1646 - 1729), a French Jesuit scholar and philologist who was known for his controversial theories regarding classical texts. He was born in Quimper, Brittany, and his work on ancient manuscripts and inscriptions gained him both praise and criticism from his contemporaries.
Other notable individuals with the HARDOIN surname include:
1. Jacques Hardoin (c. 1560 - 1630), a French scholar and theologian from Dijon, Burgundy.
2. Pierre Hardoin (1683 - 1766), a French architect and engineer who worked on several notable projects in Paris.
3. Henri Hardoin (1825 - 1892), a French politician and lawyer from Saône-et-Loire, who served as a deputy in the National Assembly.
4. Émile Hardoin (1858 - 1934), a French journalist and writer from Auxerre, Burgundy, known for his works on local history and folklore.
5. Lucien Hardoin (1882 - 1965), a French artist and painter from Dijon, known for his landscape and still life paintings.
Demographics
Ancestry and ethnicity for Hardoin
Among Census respondents with the surname Hardoin, the largest self-reported group is White at 97.1%. The next largest groups are Two or More Races (2.9%).
The bar chart below shows how Hardoin bearers described their own race and ethnicity on the 2020 Census form. The Census Bureau groups responses into six broad categories: White, Black or African American, Hispanic or Latino, Asian and Pacific Islander, American Indian and Alaska Native, and Two or More Races. When a category has too few respondents for a given surname, the Bureau suppresses the figure to protect individual privacy, which is why some names show fewer than six slices.
Percentages are shown for every Census year so the breakdown stays comparable over time. When the source file also includes raw headcounts, Name Census shows those alongside the percentages in the legend.
Keep in mind that these are self-reported numbers. A person's surname does not determine their race or ethnicity, and the distribution you see here reflects the specific population who happened to carry the Hardoin surname at the time of the 2020 Census, not any inherent property of the name itself.
- White97.1% · 99
- Two or more races2.9% · 3
Timeline
Historical Census data for Hardoin
Hardoin appears in 2 published Census surname files: 2010, 2020. The cards below show how the name's rank and bearer count changed across each release.
2020
#154,755
National surname rank
Recorded bearers 102
-4 bearers (-3.8%)
Per 100,000 0.03
Rank movement Down 986 places
| Year | Rank | Count | Per 100K | Count change | Rank change |
|---|---|---|---|---|---|
| 2010 | #153,769 | 106 | 0.04 | First available Census row | First available Census row |
| 2020 | #154,755 | 102 | 0.03 | -4 bearers (-3.8%) | Down 986 places |
For 2020, the Census Bureau published race and Hispanic-origin columns as counts rather than percentages. Name Census converts those counts back into shares so the ancestry section stays comparable with the older surname files.
Year on year
2010 vs 2020 Census
How has the Hardoin surname changed between Census years? The chart shows bearer count side by side, and the table compares rank, count, and frequency.
Census year comparison
20102020
| Metric | 2010 | 2020 | Change |
|---|---|---|---|
| Rank | #153,769 | #154,755 | -0.6% |
| Count | 106 | 102 | -3.8% |
| Per 100K | 0.04 | 0.03 | -14.7% |
Between the 2010 and 2020 Census, the number of Hardoin bearers went from 106 to 102 (-3.8% change). The surname moved down 986 positions in the national ranking, going from #153,769 to #154,755.
FAQ
Hardoin surname: questions and answers
How many people in the U.S. have the surname Hardoin?
Name Census estimates that about 117 living Americans carry the surname Hardoin. Using the current population baseline, that works out to roughly 1 in 2,929,524 residents.
How common is Hardoin?
Hardoin ranks #154,755 in the 2020 Census surname tables and is classified on this site as "Very Rare." The Census recorded the name at a frequency of 0.03 per 100,000 residents, which is about 0 people out of every 100,000.
How many people with this surname were counted in the Census?
The raw 2020 Census file counted 102 people with the surname Hardoin. That is different from the site's living-bearer estimate (117), which projects the surname's present-day count by applying the Census frequency rate to the current U.S. population.
What does 0.03 per 100,000 actually mean?
It is the Census Bureau's normalized frequency measure. A rate of 0.03 per 100,000 means that if you picked a random group of 100,000 U.S. residents, you would expect about 0 of them to have the surname Hardoin.
Has Hardoin become more or less common over time?
Between 2010 and 2020, the surname Hardoin went from 106 recorded bearers to 102. That is a decrease of 4 (-3.8%). In the national ranking it fell from #153,769 to #154,755.
What does the Census say about the background of Hardoin?
Among Census respondents with the surname Hardoin, the largest self-reported group is White at 97.1%. The next largest groups are Two or More Races (2.9%). These figures come from the 2020 Census Bureau surname tables, based on how respondents described their own race and ethnicity.
Which group reports this surname most often?
White is the largest self-reported group for the surname Hardoin in the 2020 Census, accounting for 97.1% (99 people in the source table).
What is the full ancestry breakdown?
Hardoin appears across multiple self-reported groups in the Census data. The largest shares in the 2020 file are White (97.1%), Two or More Races (2.9%). For 2020, the source file also published raw headcounts for each group, which is why this page can show both percentages and counts in the ancestry section.
Is this page using the latest Census data?
Yes. This page is using the latest surname file currently loaded on Name Census, which is 2020. The historical section above also keeps any older Census surname entries we have for Hardoin (2010, 2020).
Does the Census include every surname?
No. The Census Bureau only publishes surnames that appeared at least 100 times in a given decennial Census. That means very rare surnames are excluded entirely, and a surname can appear in one Census release but disappear from a later one if it falls below the reporting threshold.
Why don't the ancestry percentages always add up to exactly 100%?
There are two main reasons: rounding and suppression. The Census Bureau rounds published values, and it may suppress very small cells to protect privacy. For 2020, the Bureau also published raw group counts rather than direct percentages, so Name Census converts those counts back into shares for comparability across census years.
What does Hardoin mean?
Of French origin, referring to a bold or audacious person. The fuller origin note on this page goes into more detail.
Where does the surname data come from?
All surname statistics on Name Census are drawn from the US Census Bureau's decennial surname frequency tables. These files list every surname that appeared 100 or more times in the 2020 Census, along with a count, a per-100,000 rate, and a self-reported demographic breakdown. You can read the full explanation on our methodology page.
How does Name Census estimate living bearers?
For surnames, Name Census does not age cohorts the way it does for first names. Instead, it takes the Census Bureau's published frequency for Hardoin (0.03 per 100,000) and applies that rate to the current U.S. resident population to estimate how many living Americans have the surname today.
How many people are called Hardoin?
Want to know how many people have the surname Hardoin? HowManyOfMe.org, our sister site, puts the living-bearer count front and centre.